Update build flow for minified versions to include a configuration file

[surgupta-msft]

Description

Follow-up item for changes in this PR - #3825

The PR introduces a new config file artifactsconfig.json which may or may not be present in coretools. Any changes in coretools that should go to visual studio artifacts and not to cli/vscode can call this check - Utilites.IsMinifiedVersion() = true. In BuildSteps.cs, we create minified version of coretools for Visual Studio case - link.

For now, artifactsconfig.json has only below content -

{
    "minifiedVersion" : true
}

We need to update build flow so that minified versions will have this config file and make sure that artifacts are being created correctly for visual studio and cli use cases